44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)inet_makeaddr.c 5.3 (Berkeley) 6/27/88";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <netinet/in.h>
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/*
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* Formulate an Internet address from network + host. Used in
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* building addresses stored in the ifnet structure.
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*/
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struct in_addr
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inet_makeaddr(net, host)
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int net, host;
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{
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u_long addr;
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if (net < 128)
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addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
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else if (net < 65536)
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addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
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else
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addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
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addr = htonl(addr);
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return (*(struct in_addr *)&addr);
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}
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